Results 41 to 50 of about 133,410 (217)

Simultaneous Determination of the Complexing Capacity and Conditional Stability Constant of Soluble Copper(II) Complexes in Natural-Water Samples by Using a Chelate Extraction Technique

open access: yesAnalytical Sciences, 2000
Based on a back-extraction of bis(4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedionato)copper(II), a method for the simultaneous determination of the copper(II) complexing capacity of natural water and the conditional stability constant of copper(II) complex with naturally occurring ligands was developed. The feasibility of the proposed method was confirmed
Hideyuki Itabashi   +3 more
openaire   +2 more sources

Sine-Gordon Revisited

open access: yes, 1999
We study the sine-Gordon model in two dimensional space time in two different domains. For beta > 8 pi and weak coupling, we introduce an ultraviolet cutoff and study the infrared behavior.
Dimock, J., Hurd, T. R.
core   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

open access: yesFEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva   +5 more
wiley   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Studies on the Sulfur-containing Chelating Agents. XXXIX. Determination of Stability Constants of Some Metal Complexes of N-Phenyl-and N-Ethyl-β-mercaptocinnamamide and Thiodibenzoyl-methane by Solvent Extraction Method

open access: yesChemical and Pharmaceutical Bulletin, 1974
Stability constants and extraction constants of some metal complexes of N-phenyl-β-mercaptocinnamamide (I), N-ethyl-β-mercaptocinnamamide (II) and thiodibenzoylmethane (III) were determined by solvent extraction method in chloroform and isoamyl acetate systems.
MASAHIKO CHIKUMA   +2 more
openaire   +2 more sources

Revisiting f_B and m_b(m_b) from HQET spectral sum rules

open access: yes, 2013
Using recent values of the QCD (non-) perturbative parameters given in Table 1, we reconsider the extraction of f_B and the on-shell mass M_b from HQET Laplace spectral sum rules known to N2LO PT series and including dimension 7 condensates in the OPE ...
Narison, Stephan
core   +3 more sources

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

The correlation of the values of plant-avalilable Pb and Cd in soil determined using different types of extragens [PDF]

open access: yesJournal of the Serbian Chemical Society, 2004
The plant-available amount of Pb and Cd in soil was determined by extraction using the solutions: 1) 0.5 M Na2EDTA, pH 5.2; 2) 1 M KCl, pH 7.0; 3) 0.1 M KCl, 0.05 M Na2EDTA, pH 6.2; 4) 2 % CH3COOH, pH 2.5 and 5) 1 M CH3COONH4, pH 4.8.
DRAGAN MARKOVIC   +2 more
doaj  

Efficient Recovery of Noble Metal Ions (Pd2+, Ag+, Pt2+, and Au3+) from Aqueous Solutions Using N,N'-Bis(salicylidene)ethylenediamine (Salen) as an Extractant (Classic Solvent Extraction) and Carrier (Polymer Membranes)

open access: yesMembranes, 2021
This paper presents the results of the first application of N,N'-bis(salicylidene)ethylenediamine (salen) as an extractant in classical liquid–liquid extraction and as a carrier in membrane processes designed for the recovery of noble metal ions (Pd2 ...
Katarzyna Witt   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy